______describes a situation in which two very different varieties of language co-exist in

The situation described in the report ______ terri

In 1990 he caught a serious illness from ______ effects he still suffers.A．thatB．whichC．wh

The Silicon Valley is situated in ______.A．CaliforniaB．New MexicoC．FloridaD．Arizona

Language variation according to use in specific situations is studied in terms of______.A．

The first______in 1814 marked the beginning of a new stage of the Industrial Revolution wh

Studies have shown _____ teenagers often suffer from depression .A.thatB.whichC.in wh